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🔧 Edit: class-json-deflate-array-codec.php

PHP

Size: 2.32 KB | Modified: 2025-12-08 12:41:30

<?php
/**
 * An implementation of Automattic\Jetpack\Sync\Codec_Interface that uses gzip's DEFLATE
 * algorithm to compress objects serialized using json_encode.
 *
 * @package automattic/jetpack-sync
 */

namespace Automattic\Jetpack\Sync;

if ( ! defined( 'ABSPATH' ) ) {
	exit( 0 );
}

/**
 * An implementation of Automattic\Jetpack\Sync\Codec_Interface that uses gzip's DEFLATE
 * algorithm to compress objects serialized using json_encode
 */
class JSON_Deflate_Array_Codec implements Codec_Interface {
	const CODEC_NAME = 'deflate-json-array';

/**
	 * Return the name of the codec.
	 *
	 * @return string
	 */
	public function name() {
		return self::CODEC_NAME;
	}

/**
	 * Encodes an object.
	 *
	 * @param object $object Item to encode.
	 * @return string
	 */
	public function encode( $object ) {
		return base64_encode( gzdeflate( $this->json_serialize( $object ) ) ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_encode
	}

/**
	 * Decode compressed serialized value.
	 *
	 * @param string $input Item to decode.
	 * @return array|mixed|object
	 */
	public function decode( $input ) {
		$decoded  = base64_decode( $input ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_decode
		$inflated = @gzinflate( $decoded ); // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged

return is_string( $inflated ) ? $this->json_unserialize( $inflated ) : null;
	}

/**
	 * Serialize JSON
	 *
	 * @see https://gist.github.com/muhqu/820694
	 *
	 * @param mixed $any Value to serialize and wrap.
	 *
	 * @return false|string
	 */
	protected function json_serialize( $any ) {
		return wp_json_encode( Functions::json_wrap( $any ), JSON_UNESCAPED_SLASHES );
	}

/**
	 * Unserialize JSON
	 *
	 * @param string $str JSON string.
	 * @return array|object Unwrapped JSON.
	 */
	protected function json_unserialize( $str ) {
		return $this->json_unwrap( json_decode( $str, true ) );
	}

/**
	 * Unwraps a json_decode return.
	 *
	 * @param array|object $any json_decode object.
	 * @return array|object
	 */
	private function json_unwrap( $any ) {
		if ( is_array( $any ) ) {
			foreach ( $any as $k => $v ) {
				if ( '__o' === $k ) {
					continue;
				}
				$any[ $k ] = $this->json_unwrap( $v );
			}

if ( isset( $any['__o'] ) ) {
				unset( $any['__o'] );
				$any = (object) $any;
			}
		}

return $any;
	}
}

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